Glass composition, glass low in impurity content and preparation method and application of glass

A low-inclusion and composition technology, which is applied in glass manufacturing equipment, glass molding, glass furnace equipment, etc., can solve the problems of difficult removal of inclusions and low content of inclusions, and achieve increased volume and reduced N2 gas content. The effect of pressure and content reduction

Active Publication Date: 2018-07-31
DONGXU OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to overcome the problem of difficult removal of inclusions in the prior art, and to provide a composition for glass. The glass prepared from the composition for glass has low content of inclusions, simple preparation process and low preparation cost. Etc

Method used

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  • Glass composition, glass low in impurity content and preparation method and application of glass
  • Glass composition, glass low in impurity content and preparation method and application of glass
  • Glass composition, glass low in impurity content and preparation method and application of glass

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Experimental program
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Embodiment approach

[0043] According to a preferred embodiment of the present invention, the composition contains 56-63wt% SiO 2 , 17-22wt% Al 2 o 3 , 0-5.2wt% of B 2 o 3 +P 2 o 5 , 1-5wt% MgO, 2-8wt% CaO, 0-8wt% SrO, 1-12wt% BaO, 0.3-4wt% ZnO, 0.2-3wt% TiO 2 , 0.1-4wt% Y 2 o 3 +La 2 o 3 +Nd2O 3 , 2 O, where R 2 O is for Li 2 O, Na 2 O, K 2 The sum of the O content.

[0044] Preferably, the composition contains B 2 o 3 0-5wt%, P 2 o 5 It is 0-7wt%, preferably 0-5wt%. e.g. B 2 o 3 0-4.7wt% and / or P 2 o 5 It is 0-1.5wt%.

[0045] Preferably, the composition contains Y 2 o 3 0-2wt%, La 2 o 3 0-3wt%, Nd 2 o 3 It is 0-3wt%. e.g. Y 2 o 3 0-1wt%, La 2 o 3 0-1.7wt% and / or Nd 2 o 3 0-2wt%.

[0046] Preferably, the composition contains Li 2 O is 0.01wt% or less, Na 2 O is 0.01wt% or less, K 2 O is 0.01 wt% or less.

[0047] According to the present invention, the composition for glass of the present invention may further contain a chemical clarifier as necessary. ...

Embodiment 1-13、 comparative example 1-3

[0090] Weigh each raw material component according to the ratio shown in Table 1-2, mix well, and pour the mixture into a high zirconium brick crucible (ZrO 2 >85wt%), then in η x The temperature corresponding to Poise viscosity is T x Heated in a resistance furnace for 48 hours, and used high zirconium rods (ZrO 2 >85wt%) the stirrer stirs slowly at a constant speed. Quickly pour the molten glass into a stainless steel cast iron mold to form a specified block glass product, then anneal the glass product in an annealing furnace for 2 hours, turn off the power and cool down to 25°C with the furnace. The glass product is cut, ground and polished, then cleaned with deionized water and dried to obtain a finished glass product with a thickness of 0.5mm. Various properties of each glass product were measured respectively, and the results are shown in Table 1-2, and the composition of gaseous inclusions in the glass is shown in Table 3.

[0091] Table 1

[0092]

[0093] Tabl...

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Abstract

The invention relates to the field of glass manufacturing, and discloses a glass composition, glass low in impurity content and a preparation method and application of the glass. The composition comprises, by weight, 50-64% of SiO2, 14-24% of Al2O3, 0-7% of B2O3 and P2O5, 0.5-7% of MgO, 1-10% of CaO, 0-9% of SrO, 0.1-14% of BaO, 0.1-5% of ZnO, 0.1-4% of TiO2, 0.1-7% of BaO, 0.1-5% of ZnO, 0.1-4% of TiO2, 0.1-7% of Y2O3, La2O3 and Nd2O3 and 0.05% of R2O, wherein R2O is the total content of Li2O, Na2O and K2O. The composition satisfies the following conditions that the temperature T100 corresponding to the viscosity of 100 P is 1730 DEG C or above; the surface tension is smaller than 420 mN / m at the temperature of 1300 DEG C. The glass prepared through the glass composition and the preparation method of the glass low in impurity content has the advantages of being low in impurity content, simple in preparation process, low in cost and the like.

Description

technical field [0001] The invention relates to the field of glass manufacturing, in particular to a composition for glass, glass with low inclusion content and a preparation method and application thereof. Background technique [0002] In the field of flat panel display, both handheld display devices and fixed display devices are developing towards high-definition. For handheld display devices, such as mobile phones, the mainstream pixel density has exceeded 200ppi, 300ppi or even 400ppi; for fixed display devices, such as LCD TVs, the resolution has exceeded 2K, 4K or even 8K. The trend of high-definition puts forward higher and higher requirements for the fineness of the panel manufacturing process, which in turn puts forward the need to upgrade the thermal stability and quality of the supporting substrate glass. The glass suitable for display substrates belongs to the alkali-free high-aluminosilicate glass system, which has the characteristics of high strain point, high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/097C03C3/095C03C1/00
CPCC03C1/00C03C1/004C03C3/095C03C3/097C03B5/225C03B19/02C03B23/02C03B25/00C03C19/00
Inventor 张广涛李青郑权王丽红闫冬成王俊峰王博李志勇
Owner DONGXU OPTOELECTRONICS TECH CO LTD
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